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  <title>Append element to an array field</title>
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  <div id="layout-content"><div id="mysql-xdevapi-collectionmodify.arrayappend" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">CollectionModify::arrayAppend</h1>
  <p class="verinfo">(No version information available, might only be in Git)</p><p class="refpurpose"><span class="refname">CollectionModify::arrayAppend</span> &mdash; <span class="dc-title">Append element to an array field</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-mysql-xdevapi-collectionmodify.arrayappend-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>mysql_xdevapi\CollectionModify::arrayAppend</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$collection_field</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$expression_or_literal</code></span>): <span class="type"><a href="class.mysql-xdevapi-collectionmodify.html" class="type mysql_xdevapi\CollectionModify">mysql_xdevapi\CollectionModify</a></span></div>

  <p class="para rdfs-comment">
   Add an element to a document&#039;s field, as multiple elements of a field are represented as an array.
   Unlike arrayInsert(), arrayAppend() always appends the new element
   at the end of the array, whereas arrayInsert() can define the location.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-mysql-xdevapi-collectionmodify.arrayappend-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt>
<code class="parameter">collection_field</code></dt>

    <dd>

     <p class="para">
      The identifier of the field where the new element is inserted.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">expression_or_literal</code></dt>

    <dd>

     <p class="para">
      The new element to insert at the end of the document field array.
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysql-xdevapi-collectionmodify.arrayappend-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   A CollectionModify object that can be used to execute the command, or to add additional operations.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-mysql-xdevapi-collectionmodify.arrayappend-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-1585">
   <p><strong>示例 #1 <span class="function"><strong>mysql_xdevapi\CollectionModify::arrayAppend()</strong></span> example</strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$session&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysql_xdevapi</span><span style="color: #007700">\</span><span style="color: #0000BB">getSession</span><span style="color: #007700">(</span><span style="color: #DD0000">"mysqlx://user:password@localhost"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP&nbsp;DATABASE&nbsp;IF&nbsp;EXISTS&nbsp;addressbook"</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE&nbsp;DATABASE&nbsp;addressbook"</span><span style="color: #007700">)-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$schema&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getSchema</span><span style="color: #007700">(</span><span style="color: #DD0000">"addressbook"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$collection&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$schema</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">createCollection</span><span style="color: #007700">(</span><span style="color: #DD0000">"people"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$collection<br />&nbsp;&nbsp;</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">add</span><span style="color: #007700">(<br />&nbsp;&nbsp;</span><span style="color: #DD0000">'{"name":&nbsp;&nbsp;&nbsp;"Bernie",<br />&nbsp;&nbsp;&nbsp;&nbsp;"traits":&nbsp;["Friend",&nbsp;"Brother",&nbsp;"Human"]}'</span><span style="color: #007700">)&nbsp;<br />&nbsp;&nbsp;-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$collection<br />&nbsp;&nbsp;</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">modify</span><span style="color: #007700">(</span><span style="color: #DD0000">"name&nbsp;in&nbsp;('Bernie',&nbsp;'Jane')"</span><span style="color: #007700">)<br />&nbsp;&nbsp;-&gt;</span><span style="color: #0000BB">arrayAppend</span><span style="color: #007700">(</span><span style="color: #DD0000">'traits'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'Happy'</span><span style="color: #007700">)<br />&nbsp;&nbsp;-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$collection<br />&nbsp;&nbsp;</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">find</span><span style="color: #007700">()<br />&nbsp;&nbsp;-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetchAll</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程的输出类似于：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
Array
(
    [0] =&gt; Array
        (
            [_id] =&gt; 00005b6b5361000000000000010c
            [name] =&gt; Bernie
            [traits] =&gt; Array
                (
                    [0] =&gt; Friend
                    [1] =&gt; Brother
                    [2] =&gt; Human
                    [3] =&gt; Happy
                )
        )
)
</pre></div>
   </div>
  </div>
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